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Diodes Incorporated DESD3V3L2BTQ-7
- Part No.:
- DESD3V3L2BTQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DESD3V3L2BTQ-7.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:2,788
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Product details
Overview
DESD3V3L2BTQ from Diodes Incorporated is a two-channel bidirectional TVS diode designed for ESD protection of high-speed data lines. It features a 3.3V reverse standoff voltage, ±30kV IEC 61000-4-2 contact/air ESD rating, 55pF typical channel capacitance, and 23A peak pulse current, making it suitable for USB 2.0 and HDMI port protection in portable electronics.
For engineers reviewing the DESD3V3L2BTQ datasheet, DESD3V3L2BTQ pinout, DESD3V3L2BTQ application, or DESD3V3L2BTQ equivalent, key selection criteria include low clamping voltage (10V @ 23A), SOT23 package compatibility with high-density PCB layouts, automotive-grade AEC-Q101 qualification, and IATF 16949 manufacturing compliance.
Technical Context
This device implements dual-channel bidirectional transient voltage suppression using silicon avalanche diode structures optimized for fast response to ESD events. Its architecture delivers symmetrical clamping behavior across both polarities with sub-nanosecond turn-on time and minimal parasitic inductance due to SOT23 leadframe design.
The TVS operates within -55°C to +150°C ambient range and supports derated power dissipation up to 250mW at 25°C, with thermal resistance of 500°C/W junction-to-ambient on standard FR-4 PCB layout. It meets stringent automotive reliability requirements including PPAP capability and change-controlled manufacturing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 3.3 V - Maximum continuous operating voltage before conduction begins; sets upper limit for signal line DC bias tolerance. |
| Breakdown Voltage (VBR min) | 3.75 V - Minimum voltage at which avalanche conduction initiates; ensures reliable triggering above normal signal swing. |
| Clamping Voltage (VC @ IPP) | 10 V @ 23 A - Peak voltage seen by protected circuit during worst-case 8/20μs surge; critical for IC input stage survivability. |
| ESD Rating (IEC 61000-4-2) | ±30 kV contact / ±30 kV air - Full immunity to human-body-model ESD events without degradation; eliminates need for external shielding. |
| Channel Capacitance (CT) | 55 pF - Low enough to avoid signal integrity loss on USB 2.0 (480 Mbps) and HDMI 1.4 (up to 3.4 Gbps) interfaces. |
| Peak Pulse Power (PPP) | 230 W - Sustains single 8/20μs transients without failure; enables robust protection in noisy industrial environments. |
| Operating Temperature | -55°C to +150°C - Supports under-hood automotive applications and extended industrial temperature deployments. |
Pinout & Package
Package: SOT23 - Surface-mount plastic package measuring 2.9 mm × 1.3 mm × 1.0 mm (L × W × H), UL 94V-0 rated, moisture sensitivity level 1, lead-free matte tin plating over Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Channel 1 | Connects to protected signal line (e.g., USB D+); forms cathode-anode pair with Pin 3 for bidirectional clamping. |
| Pin 2 | Cathode Common | Shared cathode node for both channels; ties to ground plane or low-impedance chassis return path. |
| Pin 3 | Anode of Channel 2 | Connects to second protected signal line (e.g., USB D−); symmetric structure ensures matched ESD response with Pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTGB, TCT, and ESD; supports PPAP documentation. |
| IATF 16949 certified manufacturing | Ensures consistent lot-to-lot performance, traceable sourcing, and zero-defect production control for safety-critical systems. |
| Low 55pF channel capacitance | Maintains signal rise/fall times <1 ns on 50Ω transmission lines; preserves eye diagram integrity in high-speed serial links. |
| ±30kV ESD immunity | Eliminates field failures caused by handling or system-level ESD events without requiring additional board-level filtering. |
| SOT23 footprint compatibility | Enables drop-in replacement for legacy TVS devices and simplifies PCB redesign in space-constrained portable designs. |
Applications
| USB 2.0 Interface Protection | HDMI 1.4 Port Protection |
|---|---|
Use Scenario: Protecting differential data pairs in smartphone docking stations against repeated plug/unplug ESD events. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector pins to shunt ESD energy before reaching PHY IC inputs. Use Value: Prevents latch-up or gate oxide damage in USB transceivers while maintaining <1% signal attenuation at 480 MHz. | Use Scenario: Shielding HDMI source outputs in automotive infotainment head units from cable-discharge events. IC Role / Device Role / Timing Role: Dual-channel transient suppressor mounted adjacent to HDMI Type-A receptacle to minimize stub inductance. Use Value: Enables full compliance with IEC 61000-4-2 Level 4 without degrading TMDS eye margin or increasing bit error rate. |
| Automotive Camera Link Protection | Industrial LVDS Sensor Interface |
Use Scenario: Safeguarding MIPI D-PHY lanes between ADAS camera modules and domain controllers exposed to vehicle chassis discharge. IC Role / Device Role / Timing Role: Two-channel TVS integrated into FPC flex connector assembly to reduce EMI coupling paths. Use Value: Withstands 15000-cycle hot-plug testing at -40°C to +105°C while preserving 800 Mbps lane timing skew. | Use Scenario: Protecting factory automation vision sensors using LVDS signaling against electrostatic buildup on metal enclosures. IC Role / Device Role / Timing Role: Point-of-entry suppression on twisted-pair LVDS inputs located at DIN-rail mounted I/O modules. Use Value: Maintains <20 ps inter-pair skew across 100 m cable runs while surviving 10000+ ESD strikes per channel. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ3.3A | Single-channel, SMA package (4.5 mm × 2.7 mm), 500W PPP, 100pF CT | Higher capacitance limits use to DC/low-frequency signals only; unsuitable for USB/HDMI. | Select when cost-sensitive industrial controls require higher power rating and board space permits larger footprint. |
| TPD2E001DRSR | Two-channel, SOT-23, 5V VRWM, 15pF CT, ±8kV ESD rating | Lower ESD immunity restricts use to consumer-grade non-automotive products. | Choose for battery-powered IoT devices where ultra-low capacitance outweighs automotive qualification needs. |
Compared with SMAJ3.3A and TPD2E001DRSR, DESD3V3L2BTQ uniquely balances automotive qualification, high ESD immunity, and low capacitance in a compact SOT23 package-making it the only option validated for AEC-Q101-compliant high-speed data line protection.
Availability
DESD3V3L2BTQ is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI 1.4 port hardening, and automotive camera link safeguarding requiring stable component supply across long-life production cycles.
Supply support for DESD3V3L2BTQ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The DESDxxVL2BTQ series belongs to Diodes' automotive-qualified TVS portfolio, engineered specifically for high-reliability ESD protection in space-constrained, high-speed serial interfaces used in ADAS, infotainment, and body electronics.
FAQ
What is the maximum clamping voltage of DESD3V3L2BTQ during an ESD event?
The maximum clamping voltage is 10 V at 23 A peak pulse current (8/20 μs waveform), measured per IEC 61000-4-2 test conditions. This value ensures protected downstream ICs experience no more than 10 V overshoot during worst-case ±30 kV contact discharge events, preserving input stage integrity without requiring additional series impedance.
Is DESD3V3L2BTQ suitable for HDMI 2.0 or higher data rates?
No-its 55 pF typical channel capacitance introduces excessive signal attenuation above 3.4 Gbps. It is validated for HDMI 1.4 (3.4 Gbps) and USB 2.0 (480 Mbps). For HDMI 2.0 (6 Gbps) or USB 3.0 (5 Gbps), lower-capacitance alternatives such as DESD5V0L2BTQ (45 pF) or specialized ultra-low-C TVS devices are required.
Does DESD3V3L2BTQ require external series resistors for optimal ESD protection?
No external series resistors are needed-the device is designed for direct placement at connector pins. Its low dynamic impedance (<0.5 Ω during clamping) and sub-nanosecond response enable effective energy diversion without added RC delay. Series resistors would degrade signal integrity and are not recommended per Diodes' application guidance in AN-2001.
How does the AEC-Q101 qualification impact the use of DESD3V3L2BTQ in non-automotive applications?
AEC-Q101 qualification ensures enhanced reliability margins-including extended temperature operation (-55°C to +150°C), rigorous stress testing, and controlled manufacturing-but imposes no functional limitations. Engineers may freely deploy it in industrial, medical, or consumer applications where its robustness, low capacitance, and high ESD rating provide measurable system-level benefits beyond standard commercial-grade TVS diodes.
DESD3V3L2BTQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 2
- Voltage - Reverse Standoff (Typ):
- 3.3V
- Voltage - Breakdown (Min):
- 3.75V
- Voltage - Clamping (Max) @ Ipp:
- 10V
- Current - Peak Pulse (10/1000µs):
- 23A
- Power - Peak Pulse:
- 230W
- Power Line Protection:
- No
- Applications:
- HDMI, USB
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DESD3V3L2BTQ-7 FAQ
1.How can I place an order for DESD3V3L2BTQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DESD3V3L2BTQ-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DESD3V3L2BTQ-7 reliable?
The price and inventory of DESD3V3L2BTQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DESD3V3L2BTQ-7 is usually 5 days.
3.What payment methods are accepted for DESD3V3L2BTQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DESD3V3L2BTQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DESD3V3L2BTQ-7?
DESD3V3L2BTQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DESD3V3L2BTQ-7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DESD3V3L2BTQ-7?
For technical support, including DESD3V3L2BTQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DESD3V3L2BTQ-7 requirements.
6.How does Aetrix verify that DESD3V3L2BTQ-7 is sourced from the original manufacturer or authorized distributors?
All DESD3V3L2BTQ-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DESD3V3L2BTQ-7 meets industry standards.
7.What is the process for return or replacement of DESD3V3L2BTQ-7?
All DESD3V3L2BTQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DESD3V3L2BTQ-7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DESD3V3L2BTQ-7 part is unused and in its original packaging.
Return procedure for DESD3V3L2BTQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DESD3V3L2BTQ-7 Tags
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